Exercise cycle



FIG. 1 is a left side elevational view of an exercise cycle showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The right side elevational view is a mirror image of the left side elevational view of FIG. 1. 

The ornamental design for exercise cycle, as shown and described. 